Gunnels first war patrol (19 October – 7 December 1942) covered a passage from the United States to the United Kingdom, during which she participated in
French Morocco, on 6 November 1942, two days before the invasion, and on D-day, 8 November 1942, made infrared signals to guide the approaching fleet to the beachheads. She was off Casablanca, French Morocco, on the morning of 8 November when a United States Army Air ForcesP-40 Warhawkfighter mistakenly strafed her, forcing her to crash-dive.[6] At 12:03, an aircraft Gunnel′s crew identified as an American bomber began an attack run against her, forcing her to crash-dive again.[6] Her crew heard an explosion as she passed through a depth of 150 feet (46 m).[6]Gunnel suffered no damage or casualties in either attack.[6]
With her missions accomplished, Gunnel departed the waters off French North Africafor Rosneath, Scotland, on 7 December 1942 to terminate her first patrol. En route home, the drive gears of her HOR engines failed, forcing her to complete the final 1,000 nautical miles (1,900 km; 1,200 mi) on her auxiliary diesel engine, leading to a major overhaul at Portsmouth Naval Shipyard in Kittery, Maine.
Pacific patrols
Second and third patrols
Subsequently, assigned to the
gross register tons) on 15 June 1943, giving Gunnel her first kill, and four days later when another cargo ship, Tokiwa Maru (7,000 gross register tons), was sent under. Both sinkings were confirmed by Joint Army–Navy Assessment Committee
(JANAC) postwar.
After overhaul at
Honshū. This, too, was successful; on 4 December 1943 Gunnel sent passenger-cargo ship
Hiyoshi Maru to the bottom.
Fourth, fifth, sixth patrols
The fourth war patrol (5 February – 6 April 1944) took Gunnel from
she proceeded to Fremantle, where she concluded her patrol on 6 April 1944.
Gunnel′s fifth and sixth patrols, 3 May – 4 July 1944 and 29 July – 22 September 1944, found her again in the southern approaches of the Sunda Strait and cruising in the Sulu Sea-Manila area but failed to add to her score.
Seventh and eighth patrols
During her seventh patrol (21 October – 28 December 1944) in the South China and Sulu Seas, she sank the Torpedo Boat Sagi (600 tons) between 4–8 November;[8] passenger-cargo ship Shunten Maru (5,600 tons); and Torpedo Boat Hiyodori (600 tons) between 10 and 17 November.[9] On this same patrol Gunnel evacuated 11 naval aviators at Palawan 1 to 2 December after the fliers had been protected by friendly guerrilla forces for some 2 months.[10]
She conducted her eighth patrol (13 June – 24 July 1945) in the
B-29s
flying toward Japan on bombing missions.
Postwar
Gunnel was refitting at Pearl Harbor at war's end in August 1945. She was ordered to
Navy List
1 September 1958 and she was sold for scrapping in August 1959.
Honors and awards
battle star
Asiatic-Pacific Campaign Medal
with four battle stars
Gunnel′s first, second, third, and seventh war patrols were designated "successful." In the